Kos weather
Our guide to the weather in Kos during May
Kos is a beautiful Greek island with plenty of sun and stunning scenery, making it an ideal destination for a relaxing holiday. We've looked at the most up-to-date weather data for Kos, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Kos weather in May.
How warm is it in Kos during May?
The temperature is extremely stable in May with average highs of 22℃ and lows just 4℃ lower at 18℃. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in Kos during May?
On average, there will be 2 rainy days during the month, amounting to 28.3mm in total. That's much drier than we see in England during August, and therefore not something to be concerned about. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Kos during May?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.
How warm is the sea in Kos during May?
The water around Kos is around 20℃ during May. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.
Weather in Kos
Our month-by-month guide to the weather and climate in Kos
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